Shamusworld >> Repos - virtualjaguar/blob - src/joystick.cpp

   1 //
   2 // Joystick handler
   3 //
   4 // by cal2
   5 // GCC/SDL port by Niels Wagenaar (Linux/WIN32) and Caz (BeOS)
   6 // Cleanups/fixes by James L. Hammons
   7 //
   8
   9 #include "joystick.h"
  10
  11 #include <time.h>
  12 #include <SDL.h>
  13 #include "jaguar.h"
  14 #include "video.h"
  15 #include "settings.h"
  16 #include "gpu.h"
  17 #include "log.h"
  18
  19 #define BUTTON_U                0
  20 #define BUTTON_D                1
  21 #define BUTTON_L                2
  22 #define BUTTON_R                3
  23 #define BUTTON_s                4
  24 #define BUTTON_7                5
  25 #define BUTTON_4                6
  26 #define BUTTON_1                7
  27 #define BUTTON_0                8
  28 #define BUTTON_8                9
  29 #define BUTTON_5                10
  30 #define BUTTON_2                11
  31 #define BUTTON_d                12
  32 #define BUTTON_9                13
  33 #define BUTTON_6                14
  34 #define BUTTON_3                15
  35
  36 #define BUTTON_A                16
  37 #define BUTTON_B                17
  38 #define BUTTON_C                18
  39 #define BUTTON_OPTION   19
  40 #define BUTTON_PAUSE    20
  41
  42 // Global vars
  43
  44 static uint8 joystick_ram[4];
  45 static uint8 joypad_0_buttons[21];
  46 static uint8 joypad_1_buttons[21];
  47 extern bool finished;
  48 extern bool showGUI;
  49 bool GUIKeyHeld = false;
  50 extern int start_logging;
  51 int gpu_start_log = 0;
  52 int op_start_log = 0;
  53 int blit_start_log = 0;
  54 int effect_start = 0;
  55 int effect_start2 = 0, effect_start3 = 0, effect_start4 = 0, effect_start5 = 0, effect_start6 = 0;
  56 bool interactiveMode = false;
  57 bool iLeft, iRight, iToggle = false;
  58 bool keyHeld1 = false, keyHeld2 = false, keyHeld3 = false;
  59 int objectPtr = 0;
  60 bool startMemLog = false;
  61 extern bool doDSPDis, doGPUDis;
  62
  63 bool blitterSingleStep = false;
  64 bool bssGo = false;
  65 bool bssHeld = false;
  66
  67 void joystick_init(void)
  68 {
  69         joystick_reset();
  70 }
  71
  72 void joystick_exec(void)
  73 {
  74 //      extern bool useJoystick;
  75         uint8 * keystate = SDL_GetKeyState(NULL);
  76
  77         memset(joypad_0_buttons, 0, 21);
  78         memset(joypad_1_buttons, 0, 21);
  79         gpu_start_log = 0;                                                      // Only log while key down!
  80         effect_start = 0;
  81         effect_start2 = effect_start3 = effect_start4 = effect_start5 = effect_start6 = 0;
  82         blit_start_log = 0;
  83         iLeft = iRight = false;
  84
  85         if ((keystate[SDLK_LALT] || keystate[SDLK_RALT]) & keystate[SDLK_RETURN])
  86                 ToggleFullscreen();
  87
  88         // Keybindings in order of U, D, L, R, C, B, A, Op, Pa, 0-9, #, *
  89 //      vjs.p1KeyBindings[0] = sdlemu_getval_int("p1k_up", SDLK_UP);
  90
  91         if (keystate[vjs.p1KeyBindings[0]])
  92                 joypad_0_buttons[BUTTON_U] = 0x01;
  93         if (keystate[vjs.p1KeyBindings[1]])
  94                 joypad_0_buttons[BUTTON_D] = 0x01;
  95         if (keystate[vjs.p1KeyBindings[2]])
  96                 joypad_0_buttons[BUTTON_L] = 0x01;
  97         if (keystate[vjs.p1KeyBindings[3]])
  98                 joypad_0_buttons[BUTTON_R] = 0x01;
  99         // The buttons are labelled C,B,A on the controller (going from left to right)
 100         if (keystate[vjs.p1KeyBindings[4]])
 101                 joypad_0_buttons[BUTTON_C] = 0x01;
 102         if (keystate[vjs.p1KeyBindings[5]])
 103                 joypad_0_buttons[BUTTON_B] = 0x01;
 104         if (keystate[vjs.p1KeyBindings[6]])
 105                 joypad_0_buttons[BUTTON_A] = 0x01;
 106 //I may yet move these to O and P...
 107         if (keystate[vjs.p1KeyBindings[7]])
 108                 joypad_0_buttons[BUTTON_OPTION] = 0x01;
 109         if (keystate[vjs.p1KeyBindings[8]])
 110                 joypad_0_buttons[BUTTON_PAUSE] = 0x01;
 111
 112         if (keystate[vjs.p1KeyBindings[9]])
 113                 joypad_0_buttons[BUTTON_0] = 0x01;
 114         if (keystate[vjs.p1KeyBindings[10]])
 115                 joypad_0_buttons[BUTTON_1] = 0x01;
 116         if (keystate[vjs.p1KeyBindings[11]])
 117                 joypad_0_buttons[BUTTON_2] = 0x01;
 118         if (keystate[vjs.p1KeyBindings[12]])
 119                 joypad_0_buttons[BUTTON_3] = 0x01;
 120         if (keystate[vjs.p1KeyBindings[13]])
 121                 joypad_0_buttons[BUTTON_4] = 0x01;
 122         if (keystate[vjs.p1KeyBindings[14]])
 123                 joypad_0_buttons[BUTTON_5] = 0x01;
 124         if (keystate[vjs.p1KeyBindings[15]])
 125                 joypad_0_buttons[BUTTON_6] = 0x01;
 126         if (keystate[vjs.p1KeyBindings[16]])
 127                 joypad_0_buttons[BUTTON_7] = 0x01;
 128         if (keystate[vjs.p1KeyBindings[17]])
 129                 joypad_0_buttons[BUTTON_8] = 0x01;
 130         if (keystate[vjs.p1KeyBindings[18]])
 131                 joypad_0_buttons[BUTTON_9] = 0x01;
 132         if (keystate[vjs.p1KeyBindings[19]])
 133                 joypad_0_buttons[BUTTON_s] = 0x01;
 134         if (keystate[vjs.p1KeyBindings[20]])
 135                 joypad_0_buttons[BUTTON_d] = 0x01;
 136
 137         extern bool debounceRunKey;
 138     if (keystate[SDLK_ESCAPE])
 139     {
 140                 if (!debounceRunKey)
 141                 finished = true;
 142     }
 143     else
 144                 debounceRunKey = false;
 145
 146         if (keystate[SDLK_TAB])
 147         {
 148                 if (!GUIKeyHeld)
 149                         showGUI = !showGUI, GUIKeyHeld = true;
 150         }
 151         else
 152                 GUIKeyHeld = false;
 153
 154         if (keystate[SDLK_q])
 155                 start_logging = 1;
 156         if (keystate[SDLK_w])
 157                 gpu_reset_stats();
 158 //      if (keystate[SDLK_u])           jaguar_long_write(0xf1c384,jaguar_long_read(0xf1c384)+1);
 159         if (keystate[SDLK_d])
 160                 DumpMainMemory();
 161         if (keystate[SDLK_l])
 162                 gpu_start_log = 1;
 163         if (keystate[SDLK_o])
 164                 op_start_log = 1;
 165         if (keystate[SDLK_b])
 166                 blit_start_log = 1;
 167
 168         if (keystate[SDLK_1])
 169                 effect_start = 1;
 170         if (keystate[SDLK_2])
 171                 effect_start2 = 1;
 172         if (keystate[SDLK_3])
 173                 effect_start3 = 1;
 174         if (keystate[SDLK_4])
 175                 effect_start4 = 1;
 176         if (keystate[SDLK_5])
 177                 effect_start5 = 1;
 178         if (keystate[SDLK_6])
 179                 effect_start6 = 1;
 180
 181         if (keystate[SDLK_i])
 182                 interactiveMode = true;
 183
 184         if (keystate[SDLK_8] && interactiveMode)
 185         {
 186                 if (!keyHeld1)
 187                         objectPtr--, keyHeld1 = true;
 188         }
 189         else
 190                 keyHeld1 = false;
 191
 192         if (keystate[SDLK_0] && interactiveMode)
 193         {
 194                 if (!keyHeld2)
 195                         objectPtr++, keyHeld2 = true;
 196         }
 197         else
 198                 keyHeld2 = false;
 199
 200         if (keystate[SDLK_9] && interactiveMode)
 201         {
 202                 if (!keyHeld3)
 203                         iToggle = !iToggle, keyHeld3 = true;
 204         }
 205         else
 206                 keyHeld3 = false;
 207
 208         if (keystate[SDLK_e])
 209                 startMemLog = true;
 210         if (keystate[SDLK_r])
 211                 WriteLog("\n--------> MARK!\n\n");
 212         if (keystate[SDLK_t])
 213                 doDSPDis = true;
 214         if (keystate[SDLK_y])
 215                 doGPUDis = true;
 216
 217         // BLITTER single step
 218         if (keystate[SDLK_F5])
 219                 blitterSingleStep = true;
 220
 221         if (keystate[SDLK_F6])
 222         {
 223                 if (!bssHeld)
 224                 {
 225                         bssHeld = true;
 226                         bssGo = true;
 227                 }
 228         }
 229         else
 230                 bssHeld = false;
 231
 232         // Joystick support [nwagenaar]
 233
 234     if (vjs.useJoystick)
 235     {
 236                 extern SDL_Joystick * joystick;
 237                 int16 x = SDL_JoystickGetAxis(joystick, 0),
 238                         y = SDL_JoystickGetAxis(joystick, 1);
 239
 240                 if (x > 16384)
 241                         joypad_0_buttons[BUTTON_R] = 0x01;
 242                 if (x < -16384)
 243                         joypad_0_buttons[BUTTON_L] = 0x01;
 244                 if (y > 16384)
 245                         joypad_0_buttons[BUTTON_D] = 0x01;
 246                 if (y < -16384)
 247                         joypad_0_buttons[BUTTON_U] = 0x01;
 248
 249                 if (SDL_JoystickGetButton(joystick, 0) == SDL_PRESSED)
 250                         joypad_0_buttons[BUTTON_A] = 0x01;
 251                 if (SDL_JoystickGetButton(joystick, 1) == SDL_PRESSED)
 252                         joypad_0_buttons[BUTTON_B] = 0x01;
 253                 if (SDL_JoystickGetButton(joystick, 2) == SDL_PRESSED)
 254                         joypad_0_buttons[BUTTON_C] = 0x01;
 255         }
 256
 257         // Needed to ensure that the events queue is empty [nwagenaar]
 258     SDL_PumpEvents();
 259 }
 260
 261 void joystick_reset(void)
 262 {
 263         memset(joystick_ram, 0x00, 4);
 264         memset(joypad_0_buttons, 0, 21);
 265         memset(joypad_1_buttons, 0, 21);
 266 }
 267
 268 void joystick_done(void)
 269 {
 270 }
 271
 272 uint8 joystick_byte_read(uint32 offset)
 273 {
 274 //      extern bool hardwareTypeNTSC;
 275         offset &= 0x03;
 276
 277         if (offset == 0)
 278         {
 279                 uint8 data = 0x00;
 280                 int pad0Index = joystick_ram[1] & 0x0F;
 281                 int pad1Index = (joystick_ram[1] >> 4) & 0x0F;
 282
 283 // This is bad--we're assuming that a bit is set in the last case. Might not be so!
 284                 if (!(pad0Index & 0x01))
 285                         pad0Index = 0;
 286                 else if (!(pad0Index & 0x02))
 287                         pad0Index = 1;
 288                 else if (!(pad0Index & 0x04))
 289                         pad0Index = 2;
 290                 else
 291                         pad0Index = 3;
 292
 293                 if (!(pad1Index & 0x01))
 294                         pad1Index = 0;
 295                 else if (!(pad1Index & 0x02))
 296                         pad1Index = 1;
 297                 else if (!(pad1Index & 0x04))
 298                         pad1Index = 2;
 299                 else
 300                         pad1Index = 3;
 301
 302                 if (joypad_0_buttons[(pad0Index << 2) + 0])     data |= 0x01;
 303                 if (joypad_0_buttons[(pad0Index << 2) + 1]) data |= 0x02;
 304                 if (joypad_0_buttons[(pad0Index << 2) + 2]) data |= 0x04;
 305                 if (joypad_0_buttons[(pad0Index << 2) + 3]) data |= 0x08;
 306                 if (joypad_1_buttons[(pad1Index << 2) + 0]) data |= 0x10;
 307                 if (joypad_1_buttons[(pad1Index << 2) + 1]) data |= 0x20;
 308                 if (joypad_1_buttons[(pad1Index << 2) + 2]) data |= 0x40;
 309                 if (joypad_1_buttons[(pad1Index << 2) + 3]) data |= 0x80;
 310
 311                 return ~data;
 312         }
 313         else if (offset == 3)
 314         {
 315                 uint8 data = 0x2F | (vjs.hardwareTypeNTSC ? 0x10 : 0x00);
 316                 int pad0Index = joystick_ram[1] & 0x0F;
 317 //unused                int pad1Index = (joystick_ram[1] >> 4) & 0x0F;
 318
 319                 if (!(pad0Index & 0x01))
 320                 {
 321                         if (joypad_0_buttons[BUTTON_PAUSE])
 322                                 data ^= 0x01;
 323                         if (joypad_0_buttons[BUTTON_A])
 324                                 data ^= 0x02;
 325                 }
 326                 else if (!(pad0Index & 0x02))
 327                 {
 328                         if (joypad_0_buttons[BUTTON_B])
 329                                 data ^= 0x02;
 330                 }
 331                 else if (!(pad0Index & 0x04))
 332                 {
 333                         if (joypad_0_buttons[BUTTON_C])
 334                                 data ^= 0x02;
 335                 }
 336                 else
 337                 {
 338                         if (joypad_0_buttons[BUTTON_OPTION])
 339                                 data ^= 0x02;
 340                 }
 341                 return data;
 342         }
 343
 344         return joystick_ram[offset];
 345 }
 346
 347 uint16 joystick_word_read(uint32 offset)
 348 {
 349         return ((uint16)joystick_byte_read((offset+0)&0x03) << 8) | joystick_byte_read((offset+1)&0x03);
 350 }
 351
 352 void joystick_byte_write(uint32 offset, uint8 data)
 353 {
 354         joystick_ram[offset&0x03] = data;
 355 }
 356
 357 void joystick_word_write(uint32 offset, uint16 data)
 358 {
 359         offset &= 0x03;
 360         joystick_ram[offset+0] = (data >> 8) & 0xFF;
 361         joystick_ram[offset+1] = data & 0xFF;
 362 }